/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.core.util.MultivaluedMapImpl;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.MultivaluedMap;

/**
 *
 * @author HuynhNB
 */
public class CallRestFull extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet CallRestFull</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet CallRestFull at " + request.getContextPath() + "</h1>");
            // start code to execute ws
            
            String strAction = request.getParameter("btAdd");
            String url = "http://localhost:8080/RESTFulPra1/webresources/generic";
            if ("Add".equals(strAction)){
                String num1 = request.getParameter("txtNum1");
                String num2 = request.getParameter("txtNum2");
                
                Client _client = Client.create();
                _client.setFollowRedirects(true);
                WebResource _web = _client.resource(url);
                
                MultivaluedMap <String, String> params = new MultivaluedMapImpl();
                params.add("num1", num1);
                params.add("num2", num2);
                
                String result = _web.path("add").queryParams(params).get(String.class);
                out.println("Result get from Webservices : "+ result);
            }
            
            out.println("</body>");
            out.println("</html>");
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
